Pole-line lightning-arrester.



A. R. RHEINBBRGER.

POLE LINE LIGHTNING ARRESTER.

APPLIDATIOH FILED 00127, 1908.

949, 1 30. Patented Feb. 15, 1910.

(25 e6. 41 j/Yfonao/F. met-1656 8 sectional elevation ALFONSO B.BHEINBEBGEB, OF ST. PAUL, MINNESOTA.

POLE-LINE LIGHTNING-ARRESTER.

Specification of Letters Patent.

Patented Feb. 15, 1910.

Application filed October 7, 1908. Serial No. 456,627.

'- and %tate of Minnesota, have invented a new and useful Improvement inPole-Line l.ightuing-ilrrestcrs, of which the following i :1specification.

My invention relates to improvements in 1 lightning urn-esters and moreparticularly to u device of its kind which is to be applied to a linewire outside of a building to effectn'ely ground an excessive charge ofelectric current prior to reachlng the lnstrument or other apparatusprotected.

A further object of this invention is to provide a construction whichwill be simple and inexpensive to manufacture and in which the leakingof the charge around the I nrrester will be prevented.

The instrument is characterized by the fact, that the device isparticularly adapted for use in pole line construction and that theparts are associated with an insulator 3 to which the line is securedand with the pin or bracket upon which said insulator is adapted to bemounted.

Tn the accompan ing drawings forming part. of this speci cation, Figure1 is a artly in section of my invention showing tie parts associatedwiti an insulator and a pin; Fig. 2 is a perspective view of theelectrode which is adapted to be connected with ground; Fig. 3 1s aperspective view of the electrode which is adapted to be connected withthe line conductor, and Fig. 4 is a plan View illustrating the lineconductor connected with a pair of insulators which are provided with myimprovement, and Fig. 5 is a view of an insulator employing my inventionin which a helix'is included. lit

In the drawings, A represents an insulator made of glass or othersuitable ms.-

terial and B a pin made of wood or other suitable materi upon which saidinsulator is threaded in the usual manner. The insulator has the usualannular groove 2 in which the line conductor 3 is secured by c means ofthe tie-wire 4 or by any other means desired. The lower portion of theinsulator is formed with a petticoat 5 which s adapted to prevent waterfrom coming into contact with the, electrodes in the inzsulator.

C represents the line electrode and D the ground electrode of thelightning arrester said parts being seated in the lower end 0 theinsulator and held apart with an air gap 6 between them b means of anintervening shoulder 'i'. T 1e line electrode C is in the form of afrusto conical shell having two depending and upturned arms 8 an 9 whichare secured in the groove 2 in contact with the line conductor 3 andtie-wire 4 thus assisting to su port the line electrode in theinsulator. ormally the line conductor is held in lace u on the insulatorbefore the line con uctor is secured thereto, by detents 10 which areformed in the arms illld spring into the groove 2 in the insuator.

As shown the pin B is formed with a shoulder 11 between the threadedupper end 12 and the body 13 which is adapted to be mounted upon across-arm or bracket in the usual manner. The ground electrode D is inthe form of a sleeve which is passed over the threaded upper end of thepin and clam ed between the insulator and the 'shou der 11 when saidinsulator is screwed home. A round conductor 14 in the form of a wire isadapted to be secured between the ground electrode and the shoulder 11at its upper end and with theground E at its lower end. The outersurface of the ground electrode tapers toward its upper end thus forminga parallel surface with the inner surface of the line electrode. Theline and ground electrodes may be made out of any suitable materialdesired and the connection between the line conductor and the lineelectrode and the means for supporting the ine electrode in theinsulator may be changed and modified as desired within the scope of myinvention. In operation all over-char es of atmospheric electricity aredissipate into the ground from the hue conductor by passing over theconnectors 8 and 9 and umpin across the gap between the line and oun delectrodes and thence are conducted into the ground over the groundwire. 7

As shown in Fi 5, a second annular roove 15 is forme in the insulatorwhich is adapted to hold the drop or branch 16 leading from the lineconductor to the telephone set at a subscribers station. Intersosedbetween said branch and line conuctor is a helix of wire 17 whosefunction is to ofier a high impedance efiect to li htning dischargescausing them to see a course of least resistance across the ga betweenthe electrodes C and D of tlfe ightning arrester and into the groundinstead of causing damage to instruments contained in the branchconductor.

In accordance with the patent statutes I have described the principle ofoperation of m invention together with the apparatus w iich I nowconsider to represent the best embodiment thereof but I desire to haveit understood that the construction shown is only illustrative and thatthe invention can be carried out by other means and ap lied to usesother than those above set orth within the scope of the followingclaims.

Having described my invention what I claim as new and desire to protectby Letters Patent is:

1. The combination with an insulating pin and an insulator mountedthereon having means for holding a line, aair of electrodes one beinmounted upon t e insulator and connected with the line and the othermounted upon the pin and connected with ground, said electrodes beingspaced apart to form an air gap across which oscillatory dischar es areadapted to jump.

2. lhe combination with an insulating pin and an insulator mountedthereon having a petticoat and means for holding a line, a pair ofelectrodes within said insulator and covered by said petticoat one beinmounted upon the insulator and connect with the line and the othermounted upon the pin and connected with ground said electrodes beingspaced apart to form an air ga across which oscillatory discharges are aapted to jump.

3. The combination with an insulating pin and an insulator mountedthereon having means for holding a line, a air of electrodes onc mountedupon the insulator and having :1 connector in contact with the line andthe other mounted upon the pin and connected with ground, saidelectrodes being covered by the insulator and spaced apart to form anair ga c1 latory discharges are a apted to' jump.

l. The combination with an insulatin pin having a threaded upper end anda body with an intervening shoulder and an insulator threaded upon theupper end of said pin and havin an annular groove for holdin a line conuctor and a petticoat formed with an inner surface having an annularshoulder, a pair of electrodes in the form of across which essleeves,one of larger diameter than the other, said sleeves bein held within theinsulator with said shouFder on the insulator intervening to hold themspaced a art, the outer sleeve having an arm, exten ing into the grooveof the insulator to hold the outer sleeve in place and the inner sleevebeing clamped between the insulator and the shouldcron the pin, for thepurposes specified.

5. The combination with an insulatin pin B and an insulator A mountedthereon laving an annular groove 2 in its outer surface for holding aline, a pair of line and ground electrodes C and D inserted in the lowerend of the insulator and spaced apart by a shoulder 7 formed on theinner surface of the insulator, said line electrode being formed with apair of arms extending into the groove on the outer surface of theinsulator and said ground electrode being placed upon the pin andadapted to be connected with ground, said electrodes being spaced apartto form an air 'ap across which oscillatory discharges are a apted tojump.

6. A device of theclass set forth, comprising, in combination with amain conductor, a branch conductor, a ground condoctor, a pin, and aninsulator therefor having a petticoat, a pair of electrodes spaced apartin the lower end of said insulator one being mounted upon said pin andconnected with said ground conductor and the other mounted upon saidinsulator and cooperating with one of said main and branch conductorsand a helix also cooperating with said main and branch conductors;whereby said petticoat is adapted to shed water from said electrodes,said helix to impede the passage of lightning discharges over the branclconductor and said electrodes to offer a course to dissipate saiddischarges into the ground.

7. The combination with an insulating pin and an insulator mountedthereon, a pair of line and ground electrodes between said insulator andpin, one of said electrodes being mounted on said insulator and theother on said pin, said electrodes being spaced apart to form an air gapacross which oscillatory discharges are adapted to jump.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

ALFONSO R. RHEINBERGER.

Witnesses:

Monrrz HEIM, F. G. BRADBURY.

